YSZ (Y2O3-stabilized zirconia)-based ceramics have excellent mechanical properties, such as high strength and wear resistance. In the application, YSZ is utilized in the bead mill, a fine-grinding process. YSZ-based parts, such as the rotor and pin, can be easily damaged by continuous application with high rpm in the bead mill process. In that case, adding WC particles improves the tribological and mechanical properties. YSZ-30 vol.% WC composite ceramics are manufactured via hot pressing under different pressures (10/30/60 MPa). The hot-pressed composite ceramics measure the physical properties, such as porosity and bulk density values. In addition, the phase formation of these composite ceramics is analyzed and discussed with those of physical properties. For the increased applied pressure of hot pressing, the tetragonality of YSZ and the crystallinity of WC are enhanced. The mechanical properties indicate an improved tendency with the increase in the applied pressure of hot pressing.

1. Introduction
2. Experimental
3. Result and Discussion
4. Conclusion
Acknowledgement

• 김진권(한국세라믹기술원 이천분원 엔지니어링소재센터, 고려대학교 신소재공학과) | Jin-Kwon Kim (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology, Icheon, Gyeonggi-do 17303, Republic of Korea, Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea)
• 최재형(한국세라믹기술원 이천분원 엔지니어링소재센터, 고려대학교 신소재공학과) | Jae-Hyeong Choi (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology, Icheon, Gyeonggi-do 17303, Republic of Korea, Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea)
• 남산(고려대학교 신소재공학과) | Nahm Sahn (Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Republic of Korea)
• 류성수(한국세라믹기술원 이천분원 엔지니어링소재센터) | Sung-Soo Ryu (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology, Icheon, Gyeonggi-do 17303, Republic of Korea)
• 김성원(한국세라믹기술원 이천분원 엔지니어링소재센터) | Seongwon Kim (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology, Icheon, Gyeonggi-do 17303, Republic of Korea) Corresponding Author